TX Series Installation, Operation, and Maintenance Manual
Diversified Heat Transfer, Inc.
439 Main Road, Route 202
Towaco, New Jersey 07082
Page
5
of
33
Phone: 800-221-1522
Website: www.dhtnet.com
Estimate of Peak Domestic Hot Water Usage
Use
Average Gallons of
Hot Water per Usage
Times Used
During One Hour
Times Used
During One Hour
Showering
20
X
X
=
Bathing
20
X
X
=
Shaving
2
X
X
=
Hands and Face Washing
4
X
X
=
Hair Shampooing
4
X
X
=
Hand Dish Washing
4
X
X
=
Automatic Dish Washing
14
X
X
=
Food Preparation
5
X
X
=
Wringer Clothes Washer
26
X
X
=
Automatic Clothes Washer
32
X
X
=
Total Peak Hour Demand
=
b.
Estimate unusual peak draw demand. Whirlpool baths, hot tubs, and multiple head
showers require large quantities of hot water in a short period of time. Contact fixture
manufacturer for quantity of water required. Generally speaking, these circumstances
can be met only with larger storage volumes.
c.
Domestic Water Temperature. Most residential usage will be satisfied with 120°F water,
the temperature setting recommended by the Consumer Product Safety Commission.
Some applications, such as laundry machines and dishwashers, may require a higher
temperature.
Ratings can be improved by increasing the TX Series thermostat setting and using a mixing valve to
temper the hot water to the proper temperature. When temperatures greater than 119°F are required,
use a mixing valve at the outlet of the water heater or anti-scald fittings at point of use.
Performance Ratings
Model
TX-40
TX-50
TX-80
TX-110
Capacity(Gallons)
40
50
80
110
Heat Exchanger Surface Area sq.ft.
10.4
12.6
15.0
23.0
Recommended Flow Rate gpm (Boiler Water)
10
10
14
14
Pressure Drop Ft. Hd. (Heat Exchanger)
7.1
7.3
5.0
6.5
First Hr. Ratings gph 90
o
Rise
210
249
336
396
Continuous Flow gph 90
o
Rise
168
197
252
280
First Hr. Ratings gph 77
o
Rise
238
282
379
443
Continuous Flow gph 77
o
Rise
197
229
295
327
Boiler Size Btu's Required
120,000
140,000
180,000
199,000
NOTE
:
Above ratings based on boiler maintaining temperature of 180 degrees Fahrenheit.
SECTON 3: TANK SPECIFICATIONS
